JP2010052635A - Device for preventing drunken driving - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for preventing drunken driving to prevent, so to speak, a disguised alcohol check by a not-drunken person. <P>SOLUTION: In this device, when alcohol concentration in the body of a driver detected by an alcohol sensor part 500 is determined to be lower than standard value, an engine is started by an engine starter part 800 and at the same time, a photographing data of a face image of the driver receiving an alcohol check is stored in a storage part 700, whether a current driver is same with the driver who has received the alcohol check or not is determined by comparing a photographing data to be currently photographed with the photographing data stored in the storage part 700 with each other during driving of a vehicle, and the vehicle is stopped when the current driver is determined not to be the driver who has received the alcohol check by the determination. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drunk driving prevention device that supports the suppression of drunk driving based on a determination result of a driver's drinking level.

Prevention of drunk driving is a social request, and a device for preventing drunk driving has been devised. As for such a drunk driving prevention device, for example, in Patent Document 1 (Japanese Patent Laid-Open No. 2004-164197), a person identifying means for identifying a crew member driving a vehicle, an alcohol detecting means for detecting alcohol, An apparatus for preventing drunk driving is disclosed. Further, Patent Document 2 (Japanese Patent Application Laid-Open No. 2004-305494) is characterized in that the voice input unit in the personal identification voice identification unit and the breath blowing unit in the alcohol detection unit are arranged close to each other. A drinking detection device is described. Patent Document 3 (Japanese Patent Laid-Open No. 2007-186124) discloses a first detection means for detecting a pulse and an alcohol concentration from a vehicle gear, and a second detection for detecting a pulse from a seat of a driver's seat of the vehicle. Based on the pulse detection results of the detection means, the first detection means, and the second detection means, it can be determined that the pulse is from the same person, and the alcohol concentration detected by the first detection means is There is disclosed a drinking detection device comprising drinking detection means for detecting a person sitting in a driver seat as a drinking state when a predetermined reference value is exceeded.
JP 2004-164197 A JP 2004-305494 A JP 2007-186124 A

  Conventional drunk driving prevention devices detect alcohol concentration before driving and control engine start to prevent drunk driving, but when alcohol is detected before driving, those who are not drinking alcohol drink After the engine was started after receiving the check by the driving prevention device, there was a problem that the person who drank alcohol could be replaced to drive the vehicle.

  In other words, in the devices described in Patent Documents 1 to 3, the engine starts when the check is passed by a so-called impersonation alcohol check by a person who is not drunk other than the driver, and the driver who drank There was a problem that driving became possible.

  In order to solve the above problems, an invention according to claim 1 includes an imaging unit that captures a face image, an alcohol sensor unit that detects an alcohol concentration in the body, and a storage unit that stores imaging data obtained by the imaging device. In the drunk driving prevention apparatus having an engine starter unit for starting the engine, if the alcohol concentration in the driver's body detected by the alcohol sensor unit is determined to be a reference value or less, the engine starter unit In addition, the shooting data of the face image of the driver who has received the alcohol check is stored in the storage unit, and the shooting data that is currently imaged and the shooting data that is stored in the storage unit are To determine whether the current driver is the same as the driver who received the alcohol check. If it determined not to be the driver who receives the call checks, and performing a stop process of the vehicle.

  Further, in the invention according to claim 2, in the drunk driving prevention apparatus according to claim 1, when the current driver is determined to be the same as the driver who has undergone the alcohol check, the current image is taken. The photographing data and the photographing data stored in the storage unit are compared to determine whether there is a change in the hue of the face image. If it is determined that there is a change in the hue of the face image, A stop process is performed.

  According to the drunk driving prevention apparatus of the first aspect of the present invention, while driving the vehicle, the currently captured image data is compared with the captured data stored in the storage unit when the alcohol check is received. Therefore, it is determined whether the current driver is the same as the driver who has undergone the alcohol check, and the vehicle stop process is performed based on this determination, so that a person who is not drunk is prevented from performing so-called impersonation alcohol check. It is possible to make it impossible for a drunk driver to drive.

  In addition, according to the drunk driving prevention apparatus according to claim 2 of the present invention, there is a change in the hue of the face image by comparing the currently captured image data with the image data stored in the storage unit. Since the vehicle stop process is performed based on this determination, the drunk driving by the driver after starting the engine after receiving the alcohol check can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a situation around a driver's seat of a vehicle equipped with a drunk driving prevention apparatus according to an embodiment of the present invention, and FIG. 2 shows a system configuration of the drunk driving prevention apparatus according to the embodiment of the present invention. FIG. 1 and 2, 100 is an ECU, 250 is a key unit unit, 430 is an imaging unit, 500 is an alcohol sensor unit, 600 is an interface unit, 610 is a display unit, 620 is a touch panel unit, 630 is a speaker unit, and 700 is Reference numeral 800 denotes an engine starter unit, 810 denotes a starter relay, and 820 denotes a starter motor. In addition, although the drunk driving prevention apparatus of this embodiment assumes mounting in vehicles, such as a motor vehicle and a hybrid vehicle, it is also possible to mount in other moving means, such as a train, a ship, and an aircraft. Further, in the present embodiment, the drunk driving prevention device will be described based on an example in which the drunk driving prevention device is mounted on a general gasoline vehicle, but the drunk driving prevention device of the present invention is also used when only electric energy is used in the vehicle. Applicable. In the case of such a vehicle using electric energy, it can be understood by replacing “engine” in the embodiment with “motor”.

  The ECU 100 is an abbreviation for an electronic control unit, and is a general-purpose information processing mechanism including a CPU, a ROM that holds a program that operates on the CPU, and a RAM that is a work area of the CPU. The ECU 100 cooperates and operates with each component connected to the illustrated ECU 100.

  The key unit 250 is a general unit that starts the engine with a normal key. In the present invention, the concept of accessory power supply (ACC) and engine start that accompanies engine start by key rotation uses well-known concepts.

  The imaging unit 430 is a digital camera provided at a position suitable for imaging the face of the driver sitting in the driver's seat, and acquires imaging data of the driver's face image. The imaging unit 430 may acquire a still image or a moving image. Based on the captured image data acquired by the imaging unit 430, the ECU 100 executes image recognition such as extraction of feature points of the driver's face and extraction of information on the color of the driver's face.

  The alcohol sensor unit 500 can use various types of conventionally known alcohol sensors. Specifically, for example, as in a sensor described in JP-A-2001-21567, two electrodes (for example, comb shapes) facing each other are provided on an insulating substrate, and a sensitive film is provided so as to cover the electrodes. Form. As the material of the sensitive film, for example, a film made of a conductive polymer such as polypyrrole or polythiophene can be used. This sensitive film has a response characteristic to ethyl alcohol. When a component (molecule) of ethyl alcohol adheres to the surface of the sensitive film, the conductive polymer conducts due to the direct or indirect involvement of the molecule. The rate changes. Thereby, the resistance value between electrodes changes. In the present invention, the alcohol concentration in the driver's body is detected from the breath of the driver. However, the present invention is not limited to this example, and for example, a method for detecting the alcohol concentration in blood may be used. As long as the alcohol concentration in the driver's body can be detected.

  The interface unit 600 is provided in front of the driver's seat of the vehicle, and is configured to provide information related to the vehicle to the driver and to input predetermined items to the vehicle side by the driver's operation. The display output unit / input unit of the interface unit 600 has a structure in which the display unit 610 is provided with a display device such as a liquid crystal and a transparent touch panel 620 unit provided thereon. The touch panel unit 620 can detect a predetermined contact position. In the interface unit 600, for example, a virtual button is displayed on the display unit 610, and the touch panel unit 620 detects that the driver touches the button, whereby a predetermined input to the device can be performed. The interface unit 600 also includes a speaker unit 630 so that voice guidance and warning can be given to the driver as necessary.

  The storage unit 700 includes a relatively large-capacity storage device such as a hard disk or a flash memory, and stores shooting data related to the driver's face image. The storage unit 700 may store a travel history database including a log of a vehicle travel record, a fuel consumption status log, a personal database for each driver, and the like.

  The engine starter unit 800 starts an engine (not shown). A vehicle on which the drunk driving prevention device of the present embodiment is mounted includes a gasoline engine (not shown) that drives the vehicle as a power plant of the vehicle. A starter motor 820 for starting the engine is attached to the gasoline engine. The starter motor 820 is driven by electric power supplied from a battery (not shown) via a starter relay 810. The starter relay 810 is connected to the ECU 100 as shown in the figure, and is turned on / off based on a start signal START from the ECU 100.

  Next, the process of the drunk driving prevention apparatus comprised as mentioned above is demonstrated. FIG. 3 is a diagram showing a processing flow in the key unit portion of the drunk driving prevention apparatus according to the embodiment of the present invention. In FIG. 3, when processing in the key unit section 250 is started in step S100, the process proceeds to step S101, in which it is determined whether the key has been inserted through the key hole and the accessory has been turned on. Determined. When the determination in step S102 is YES, the process proceeds to step S103, and when it is NO, step S102 is looped.

  In step S103, the key rotation is locked until the accessory power is turned on. Such a mechanism is provided in the key unit 250.

  In step S104, an activation command is issued to the ECU 100, and in step S105, a command is issued on the ECU 100 to start an alcohol check. In step S106, the processing of the key unit 250 is terminated.

  Next, processing on the ECU 100 side that has received the alcohol check start command from the key unit 250 will be described. FIG. 4 is a diagram showing a processing flow in the ECU of the drunk driving prevention apparatus according to the embodiment of the present invention.

  In FIG. 4, when the alcohol check process by the drunk driving prevention apparatus of the present invention is started in step S200, the process proceeds to step S201, and the display unit 610 displays a request for alcohol check from the driver. FIG. 6 is a diagram showing a display example on the display unit of the drunk driving prevention apparatus according to the embodiment of the present invention. In step S201, for example, as shown in FIG. 6, a message “Perform alcohol check before starting the engine. Exhale to the alcohol sensor” is displayed to the driver. In response to this message, the driver touches either the “OK” or “Cancel” button.

  In step S202, it is determined which of the OK button / cancel button has been touched. If the determination result in step S202 is “OK”, the process proceeds to step S203, and if it is “cancel”, the process proceeds to step S210.

  In step S203, imaging of the driver is started by the imaging unit 430. When the imaging unit 430 is a digital camera that captures still images, images of a plurality of frames are captured at predetermined time intervals and stored as captured data.

  In step S204, it is determined whether the image data captured by the image capturing unit 430 is a face image. This step is looped until the determination at this step is YES. It should be noted that an image recognition technique using an information processing apparatus can be used to determine whether or not the captured data relates to a face image.

  In step S205, the alcohol sensor unit 500 is activated. Thereby, the alcohol concentration in the driver's breath is detected.

  In step S <b> 206, the image data of the face image and the alcohol concentration data are stored in the storage unit 700.

  In step S207, it is determined whether the alcohol concentration detected by the alcohol sensor unit 500 is equal to or lower than a predetermined reference value. When the result of determination in step S207 is YES, the process proceeds to step S208, and when NO, the process proceeds to step S209.

  In step S208, the key rotation locked by the key unit section 250 (step S103) is released. As a result, the driver can rotate the key to START, and can start the engine.

  On the other hand, in step S209, the display unit 610 displays that the engine cannot be started. In step S210, the operation of ECU 100 is terminated.

  In step S211, the alcohol check process ends.

  Next, processing during operation after starting the engine as described above will be described. FIG. 5 is a diagram showing a processing flow in ECU 100 of the drunk driving prevention apparatus according to the embodiment of the present invention. This processing flow is a subroutine-like flow that is executed at a predetermined time interval, and is not always executed.

  In FIG. 5, when the driving alcohol check process is started in step S300, the process proceeds to step S301, where the imaging unit 430 images the driver and acquires imaging data. In the next step S302, the image data stored in the storage unit 700 is compared with the image data captured in step S301. In this comparison, a well-known image analysis processing technique can be used.

  In step S303, based on the comparison of the two image data, it is determined whether or not the person at the start of the engine and the person currently driving are the same person. When the result of determination in step S303 is YES, the process proceeds to step S305, and when NO, the process proceeds to step S304.

  In step S304, a vehicle stop preparation process is performed. It should be noted that since the traveling vehicle cannot be suddenly stopped, in this step, a preparatory process for stopping the vehicle by an appropriate method is performed.

  In step S305, the process routine for checking alcohol during operation is terminated, and the process returns to a main routine (not shown).

  According to the configuration and processing of the drunk driving prevention device as described above, while driving the vehicle, the currently captured image data is compared with the captured data stored in the storage unit when the alcohol check is received. Since it is determined whether the current driver is the same as the driver who has received the alcohol check and the vehicle stop process is performed based on this determination, so-called impersonation alcohol check by a person who is not drunk is prevented. It is possible to make it impossible for a drunk driver to drive.

  Next, another embodiment of the present invention will be described. FIG. 7 is a view showing a situation around a driver's seat of a vehicle equipped with a drunk driving prevention apparatus according to another embodiment of the present invention, and FIG. 8 is a drunk driving prevention apparatus according to another embodiment of the present invention. FIG. 1 is a diagram showing a system configuration. In the following, the same reference numerals as those in the previous embodiment are the same as those in the previous embodiment, and therefore, the configuration different from the previous embodiment will be mainly described. 7 and 8, 200 is an intelligent key unit, 210 is an intelligent key, 300 is an engine start switch, 410 is a first imaging unit, 420 is a second imaging unit, 900 is a navigation unit, 910 is a navigation system unit, Reference numerals 920 denote databases.

  The intelligent key unit 200 is also called a smart key or the like, and can start a vehicle engine without using a conventional key-like key. The intelligent key unit unit 200 always performs a polling operation by wireless to check whether or not the intelligent key 210 exists in the vicinity. The intelligent key 210 responds to this polling operation by responding to the intelligent key unit section 200 with a unique key ID. The intelligent key unit section 200 activates various operation permissions relating to the vehicle--for example, permission to start the engine--only when this key ID matches. Although details are not illustrated, the intelligent key unit 200 includes an information communication unit such as an antenna, an information processing unit such as a CPU, and the like.

The first imaging unit 410 is disposed substantially above the display unit 610 (touch panel unit 620), and the second imaging unit 420 is disposed at a position where a face image of a driver who is driving can be acquired. In the previous embodiment, the alcohol sensor unit 500 is disposed in the steering unit. However, in the present embodiment, the alcohol sensor unit 500 is disposed substantially below the display unit 610 (touch panel unit 620). The first imaging unit 410 is used as a dedicated imaging device at the time of alcohol check before starting the engine.

  The engine start switch 300 is a button-like switch that triggers the engine to start when an intelligent key 210 with a unique key ID is present in the vicinity of the intelligent key unit 200. is there.

  The navigation system unit 900 includes a navigation system 910 and a navigation system database 920 such as map information referred to by the navigation system 910. The navigation system 910 can acquire the current position information of the vehicle by using a GPS positioning unit that receives a GPS signal from a GPS satellite and calculates its own position. In the drunk driving prevention apparatus of the present invention, if positioning information can be acquired, other positioning methods can be used without using such a GPS positioning method. In the drunk driving prevention apparatus of the present invention, the database 920 stores road information, facility information, and the like, and particularly includes information related to a safe place for stopping the vehicle.

  Next, processing of the drunk driving prevention apparatus according to another embodiment configured as described above will be described. FIG. 9 is a diagram showing a processing flow in the intelligent key unit section 200 of the drunk driving prevention apparatus according to another embodiment of the present invention. Such processing is executed by the information processing section of the intelligent key unit section 200 (not shown).

  In FIG. 9, when the process flowchart is started in step S400, the process proceeds to S401, and the intelligent key unit unit 200 transmits a response request signal. Such periodic transmission of the response request signal corresponds to a polling operation.

  In step S402, it is determined whether or not there is a reception corresponding to the response request signal. If the decision result in the step S402 is YES, the process proceeds to a step S403, and if it is NO, the process returns to the step S401 and repeats transmitting a response request signal.

  In step S403, it is determined whether or not the key ID information included in the reception corresponding to the response request signal matches that of the own device. When the determination result in step S403 is YES, the process proceeds to step S404. If the decision result in the step S403 is NO, the process returns to the step S401 and repeats transmitting a response request signal.

  In step S404, the accessory power supply is set to ON. In the next step S405, an instruction to start the ECU 100 is issued. In step S406, an execution instruction for starting an alcohol check is issued to the ECU 100. In step S407, the process of intelligent key unit section 200 is terminated.

  Next, processing on the ECU 100 side that has received the alcohol check start command from the key unit 250 will be described. FIG. 10 is a diagram showing a processing flow in the ECU of the drunk driving prevention apparatus according to another embodiment of the present invention.

  In FIG. 10, when the alcohol check process by the drunk driving prevention apparatus of the present embodiment is started in step S500, the process proceeds to step S501, and the display unit 610 displays a request for alcohol check from the driver. FIG. 12 is a diagram showing a display example on the display unit of the drunk driving prevention apparatus according to the embodiment of the present invention. FIG. 12A shows a display example in step S501.

In step S501, for example, as shown in FIG. 12A, the driver is asked to “Perform an alcohol check before starting the engine. On the next screen, while displaying your face image in the auxiliary line , Exhale toward the alcohol sensor "message. In response to this message, the driver touches either the “OK” or “Cancel” button.

  In S502, it is determined which button of the OK button / cancel button has been touched. If the determination result in step S502 is “OK”, the process proceeds to step S503, and if it is “cancel”, the process proceeds to step S512.

  In step S503, the display unit 610 displays an auxiliary line as shown in FIG. The driver adjusts the position of his / her face forward / backward and left / right so that his / her face is projected in the auxiliary line as instructed by the previous message. At this time, the imaging device that captures the driver's face image is the first imaging unit 410, and when the driver takes a position within the auxiliary line, the driver's mouth is the alcohol sensor unit 500. An auxiliary line is provided around the front. If the auxiliary line as described above is further displayed by the positional relationship among the first imaging unit 410, the display unit 610, and the alcohol sensor unit 500 as in the present embodiment, the driver's exhalation can be reliably ensured. The part 500 can be reached. FIG. 12C is a diagram showing a display example of the display unit 610 when the driver puts his / her face image in the auxiliary line.

  In S503, it is determined whether or not it is recognized that a face image exists in the auxiliary line as described above. Whether such an image in the auxiliary line is related to a face image can be well known by using an image recognition technique by an information processing apparatus.

  If the determination result in step S503 is YES, the process proceeds to step S504, and if NO, the process returns to step S503.

  In step S504, which is performed when the face image in the auxiliary line becomes recognizable, the first image capturing unit 410 starts capturing the face image.

  In step S505, it is determined whether there is a change in the image around the mouth of the face image in the imaging data. FIG. 12D is a diagram illustrating a display example of the display unit 610 when there is a change in the image around the driver's mouth. By making such a determination, the alcohol concentration data of the driver's own breath is reliably acquired. When the determination result of step S505 is YES, the process proceeds to step S506, and when it is NO, the process returns to step S505.

  In step S506, the alcohol concentration data in the driver's breath is read from the alcohol sensor unit 500.

  In step S507, it is determined whether the alcohol concentration detected by the alcohol sensor unit 500 is equal to or lower than a predetermined reference value. When the result of the determination in step S507 is YES, the process proceeds to step S508, and when it is NO, the process proceeds to step S510.

  In step S508, engine start is permitted by depressing the engine start switch 300, and in step S509, the image data of the driver's face image and the alcohol concentration data are stored and stored in the storage unit 700. In step S514, the alcohol check process ends.

In step S510 that proceeds when the result of the determination in step S507 is NO, the display unit 610 displays that the engine cannot be started. In step S511, the engine start by pressing the engine start switch 300 is set as disapproved.

  In step S512, the operation of the ECU 100 is terminated, the accessory power source is turned off in step S513, and the alcohol check process of the drunk driving prevention apparatus is terminated in step S514.

  Next, processing during operation after starting the engine as described above will be described. FIG. 11 is a diagram showing a processing flow in the ECU of the drunk driving prevention apparatus according to another embodiment of the present invention. This processing flow is a subroutine-like flow that is executed at a predetermined time interval, and is not always executed.

  In FIG. 11, when the driving alcohol check process is started in step S600, the process proceeds to step S601, where the second imaging unit 420 images the driver and acquires imaging data. In the next step 6302, the image data stored in the storage unit 700 is compared with the image data captured in step S601. In this comparison, a well-known image analysis processing technique can be used.

  In step S603, based on the comparison of the two image data, it is determined whether or not the person at the start of the engine and the person currently driving are the same person. If the determination result in step S603 is YES, the process proceeds to step S612, and if NO, the process proceeds to step S604.

  In step S612, the hue of the face image is compared between the image data stored in the storage unit 700 and the image data captured in step S601. In step S613, whether the hues can be regarded as the same. It is determined whether or not. When the determination result of step S613 is YES, the process proceeds to step S614 and the process is terminated. If the determination result is NO, the process proceeds to step S604.

  In step S604, since the driver is not the same as when the engine is started, or at the stage where even the same person can drink alcohol, a warning that the driver is abnormal is given on the interface unit 600. In step S605, counting is started by a timing unit (not shown), and it is determined in step S606 whether a predetermined warning time has elapsed. When this time has elapsed, the process proceeds to step S607.

  In step S607, the interface unit 600 issues a warning that the vehicle is to be stopped. This warning is one level stronger than the warning in step S604. In step S608, counting is started by a timing unit (not shown), and it is determined in step S609 whether a predetermined warning time has elapsed. When this time has elapsed, the process proceeds to step S610.

  In step S610, based on the information from the navigation system unit 910, it is determined whether or not the vehicle exists in a place where it can be safely stopped. If it is determined in step S610 that the vehicle is present at a place where it can be safely stopped, the process proceeds to step S611 to perform a process of stopping the engine.

  In step S614, the processing routine for checking alcohol during operation is terminated, and the process returns to a main routine (not shown).

According to the drunk driving prevention apparatus according to the other embodiments as described above, during the driving of the vehicle, the currently captured image data is compared with the captured data stored in the storage unit when the alcohol check is received. Therefore, it is determined whether the current driver is the same as the driver who has received the alcohol check, and the vehicle stop process is performed based on this determination, so that a person who is not drunk prevents so-called impersonation alcohol check It becomes possible to make it impossible to drive by a drunk driver.

  Further, according to the drunk driving prevention apparatus according to still another embodiment, whether or not there is a change in the color of the face image by comparing the currently captured image data with the captured data stored in the storage unit. Since the vehicle stop process is performed based on this determination, the drunk driving by the driver after receiving the alcohol check and starting the engine can be prevented.

  As described above, in the present specification, various embodiments have been described. However, it should be noted that an invention configured by arbitrarily combining the configurations of the respective embodiments can also be included in the scope of the present invention.

It is a figure which shows the mode around the driver's seat of the vehicle carrying the drunk driving prevention apparatus which concerns on embodiment of this invention. 1 is a diagram showing a system configuration of a drunk driving prevention apparatus according to an embodiment of the present invention. It is a figure which shows the processing flow in the key unit part of the drunk driving prevention apparatus which concerns on embodiment of this invention. It is a figure which shows the processing flow in ECU of the drunk driving prevention apparatus which concerns on embodiment of this invention. It is a figure which shows the processing flow in ECU of the drunk driving prevention apparatus which concerns on embodiment of this invention. It is a figure which shows the example of a display in the display part of the drunk driving prevention apparatus which concerns on embodiment of this invention. It is a figure which shows the mode of the driver's seat periphery of the vehicle carrying the drunk driving prevention apparatus which concerns on other embodiment of this invention. It is a figure which shows the system configuration | structure of the drunk driving prevention apparatus which concerns on other embodiment of this invention. It is a figure which shows the processing flow in the intelligent key unit part of the drunk driving prevention apparatus which concerns on other embodiment of this invention. It is a figure which shows the processing flow in ECU of the drunk driving prevention apparatus which concerns on other embodiment of this invention. It is a figure which shows the processing flow in ECU of the drunk driving prevention apparatus which concerns on other embodiment of this invention. It is a figure which shows the example of a display in the display part of the drunk driving prevention apparatus which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... ECU, 200 ... Intelligent key unit part, 210 ... Intelligent key, 250 ... Key unit part, 300 ... Engine start switch, 410 ... 1st imaging part, 420 ... Second imaging unit, 430 ... imaging unit, 500 ... alcohol sensor unit, 600 ... interface unit, 610 ... display unit, 620 ... touch panel unit, 630 ... speaker unit, 700 ... Storage unit, 800 ... Engine starter unit, 810 ... Starter relay, 820 ... Starter motor, 900 ... Navigation unit, 910 ... Navigation system unit, 920 ... Database

Claims (2)

In a drunk driving prevention apparatus comprising: an imaging unit that captures a face image; an alcohol sensor unit that detects alcohol concentration in the body; a storage unit that stores data captured by the imaging device; and an engine starter unit that starts an engine. ,
When it is determined that the alcohol concentration in the driver's body detected by the alcohol sensor unit is below a reference value, the engine is started by the engine starter unit, and the face image data of the driver who has received the alcohol check Is stored in the storage unit,
While driving the vehicle, compare the currently captured image data with the captured data stored in the storage unit to determine whether the current driver is the same as the driver who has undergone the alcohol check, A drunk driving prevention apparatus characterized in that if the determination determines that the current driver is not a driver who has received an alcohol check, the vehicle is stopped. Furthermore, if it is determined that the current driver is the same as the driver who received the alcohol check,
Compare the shooting data currently captured and the shooting data stored in the storage unit to determine whether there is a change in the hue of the face image,
The drunk driving prevention apparatus according to claim 1, wherein when the determination determines that there is a change in the hue of the face image, the vehicle stop process is performed.

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